ADS125H02
24-bit, 40-kSPS, 2-ch delta-sigma ADC with ±20-V input, PGA, IDACs, GPIOs and VREF
ADS125H02
- ±20-V input, 24-bit delta-sigma ADC
- Programmable data rate: 2.5 SPS to 40 kSPS
- High-voltage, high-impedance PGA:
- Differential input range: up to ±20 V
- Programmable gain: 0.125 to 128
- Common-mode input voltage: up to ±15.5 V
- Input impedance: 1 GΩ (minimum)
- High-performance ADC:
- Input noise: 45 nVRMS (20 SPS)
- CMRR: 105 dB
- Normal-mode rejection at 50 Hz, 60 Hz: 95 dB
- Offset drift: 5 nV/°C
- Gain drift: 1 ppm/°C
- INL: 2 ppm
- Integrated features and diagnostics:
- 2.5-V reference: 3 ppm/°C drift
- Clock oscillator: 2.5% error (maximum)
- Excitation current sources
- GPIO to drive external mux
- Signal and reference voltage monitors
- Cyclic redundancy check (CRC)
- Power supplies:
- AVDD: 4.75 V to 5.25 V
- DVDD: 2.7 V to 5.25 V
- HVDD: ±5 V to ±18 V
- Operating temperature: –40°C to +125°C
- 5-mm × 5-mm VQFN package
The ADS125H02 is a ±20-V input, 24-bit, delta-sigma (ΔΣ) analog-to-digital converter (ADC). The ADC features a low-noise programmable gain amplifier (PGA), an internal reference, clock oscillator, and signal or reference out-of-range monitors.
The integration of a wide input range, ±18-V PGA and an ADC into a single package reduces board area up to 50% compared to discrete solutions.
Programmable gain of 0.125 to 128 (corresponding to an equivalent input range from ±20 V to ±20 mV) eliminates the need for an external attenuator or external gain stages. 1-GΩ minimum input impedance reduces error caused by sensor loading. Additionally, the low noise and low drift performance allow direct connections to bridge, resistance temperature detector (RTD), and thermocouple sensors.
The digital filter attenuates 50-Hz and 60-Hz line cycle noise for data rates ≤ 50 SPS or 60 SPS to reduce measurement error. The filter also provides no-latency conversion data for high data throughput during channel sequencing.
The ADS125H02 is housed in a 5-mm × 5-mm VQFN package and is fully specified over the –40°C to +125°C temperature range.
Technical documentation
Design & development
For additional terms or required resources, click any title below to view the detail page where available.
ADS125H02EVM — ADS125H02 evaluation module
The ADS125H02 evaluation module (EVM) is a platform for evaluating the ADS125H02 analog-to-digital converter (ADC). ADS125H02 is a wide-input-range, 24-bit, 19.2-kSPS, delta-sigma (ΔΣ) ADC with an integrated PGA, voltage reference, and internal fault monitors. Differential input (...)
ADC-RTD-CONFIG-CALC — RTD Configuration Calculator for Precision ADCs
This resistance temperature detector (RTD) configuration calculator is a Microsoft® Excel-based tool that helps the user identify a system solution for an RTD application. Two-, three- and four-wire RTD configurations are shown by default, with options for a high-side or low-side reference (...)
Supported products & hardware
Products
Precision ADCs
ANALOG-ENGINEER-CALC — PC software analog engineer's calculator
The analog engineer’s calculator is designed to speed up many of the repetitive calculations that analog circuit design engineers use on a regular basis. This PC-based tool provides a graphical interface with a list of various common calculations ranging from setting operational-amplifier (...)
Supported products & hardware
Products
Precision op amps (Vos<1mV)
General-purpose op amps
Audio op amps
Transimpedance amplifiers
High-speed op amps (GBW ≥ 50 MHz)
Power op amps
Video amplifiers
Line drivers
Transconductance amplifiers & laser drivers
Fully differential amplifiers
Precision ADCs
Biosensing AFEs
High-speed ADCs (≥10 MSPS)
Touchscreen controllers
Difference amplifiers
Instrumentation amplifiers
Audio line receivers
Analog current-sense amplifiers
Digital power monitors
Analog current-sense amplifiers with integrated shunt resistor
Digital power monitors with integrated shunt resistor
Die & wafer services
RF receivers
RF transmitters
SBAC234 — ADS125H02 Design Calculator
ADC-DAC-TO-VREF-SELECT-DESIGN-TOOL — The ADC-TO-VREF-SELECT tool enables the pairing of TI ADCs, DACs, and series voltage references.
Supported products & hardware
Products
Series voltage references
Precision ADCs
Biosensing AFEs
Integrated precision ADCs & DACs
High-speed ADCs (≥10 MSPS)
Precision DACs (≤10 MSPS)
PSPICE-FOR-TI — PSpice® for TI design and simulation tool
TINA-TI — SPICE-based analog simulation program
Package | Pins | CAD symbols, footprints & 3D models |
---|---|---|
VQFN (RHB) | 32 | Ultra Librarian |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
- Fab location
- Assembly location
Recommended products may have parameters, evaluation modules or reference designs related to this TI product.
Support & training
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